Sharp proprietary SCOOP chips. In fact they are custom programmed ASIC (gate array) chips S1L50752B26B200. Both are probably exactly the same. They are used as a CF interface, remaining pins are used as a GPIO pins for many purposes (see scoop in kernel sources).

QUOTE(Skaarj @ Sep 19 2011, 08:00 AM)

and one marked asRX-IX0032YCPZQI've found almost nothing about these chips on the net.What can it be?

So, what does actually NAND contain?String from SYSTC320.DBK contain text from diagnostic menu (which is accessible by pressing D+M)And I don't understand where diagnostic menu code exists. Can it be duplicated in PROM and NAND?

So, what does actually NAND contain?String from SYSTC320.DBK contain text from diagnostic menu (which is accessible by pressing D+M)And I don't understand where diagnostic menu code exists. Can it be duplicated in PROM and NAND?

Yes, it is duplicated or nearly duplicated. D+M is NAND diag, Fn+D+M is ROM diag. ROM diag works even with corrupted NAND.

PROM and NAND memory map on Sharp Zaurus SL-C3200~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(it is known to be different from all other models including SL-C3100)